Hmm good point... but in the same time I don't have other option at the moment, with small kids everything seems challenging... (I actually contemplate to start at 5am and move my evening activities entirely to take place in the morning...)

But that definitely is good point and I'll need to think about it. I often wake up at 5am so at 6 I'm already 1 hour on my legs, already had shower and some walk on "fresh" air with my cup of coffee picked up on the way. So I don't feel sleepy or tired at that point, just not concentrated and not in the flow.